ABSTRACT
Objective To investigate the efficacy of tolterodine plus tamsulosin in rats with benign prostatic hyperplasia(BPH)induced low urinary tract syndrome(LUTS).Methods Male rats were castrated,then testosterone propionate were given by subcutaneous injection to induce BPH/LUTS model.Model rats were intragastrically administrated with 0.4mg/kg of tolterodine,0.04mg/kg of tamsulosin or(0.4+0.04)mg/kg of tolterodine plus tamsulosin for 14 days and urodynamics,residual urine volume and volume of bladder were mearsured.Results Tolterodine plus tamsulosin could simultaneously shorten the micturition duration,prolong the interval duration between micturition,decrease the threshold intravesical pressure at micturition and the max intravesical Pressure at micturition significantly.The combined-therapy method could also decrease the residual urine volume to a certein extent and had no obvious influence on enlarging the volume of bladder(P＜0.05 or P＜0.01).Conclusion Combination treatment with tolterodine and tamsulosin may efficiently ameliorate bladder outlet obstrution and overactive bladder simultaneously,with no extra danger of uroschesis.